Tube cutting mechanism



Sept. 20, 932. c. F. SMITH TUBE CUTTINGMECHAMSM Original Filed Oct. 2.).928 2 Sheets-Sheet 1 mwUllll Sept. 20, i932. c. F. SMITH TUBE CUTTINGMECHANISM Original Filed Oct. 2, 1928 2 Sheets-Sheet 2 ATTORNEY 30downwardly reaching Patented Sept. 20, 1932 niet En STATES VParis.

lCHARLES r. SMITH, or BRooKLYN, lNEW YORK,

erica i ASSIGNOR, :BYr MEASNE ASSIGNMENTS,

T LILY-TULIP CU2V CORPORATION, OF NEW YORK, 1\T Y., A. CORPORATION" OFDIELA- Y WARE TUBE lCUTTING MECHANISM Y 'Resiea forl (abanaone)appncatin, seriaiNq. 809,700, aiea'october 2, 1928. This application meaFebruary 9, 193,2.

This invention relates to tube cutting mechanisms and has for its Objectto provide'a mechanism of the character specified, simple inconstruction, accurate in operation and 5 having small liability toderangement.

Y VViththese and other objects which will appear laterherein, myimprovements comprise features illustrated in their preferred embodimentin the drawings accompanying this l0 speciCatiOn, wherein Figure lisaplan view of my improvedmechanism. Fig. 2 is an elevation with portionsbroken away, looking in the direction of arrow 2, Fig. 1. Fig. 3 is afragmentary plan view looking in the direction of arrow 3, Fig. 2. Fig.4 is a fragmentary plan vview showing a modification ofy a portionofwhat is shown in Fig. 1. v Fig. 5

-is a fragmentary-elevation of a portion of what is shown in Fig. 4. Allthe figures of the drawings are to the same scale.

The present improvements are particularly applicable as an adjunct to amachine for making paper tubes of small caliber such as are supplied atsoda fountains and the like.

My improvements are equally useful in connection with machines forforming other tu bular products such as cigarettes.

Directing attention first to Figs.' 1 and 2, 4 is a bridge-like frameVhaving opposite feet as 5, fixed to hol? low base `6. Said frame 4 hasa lengthwise passage `7 therethrough, which may conveniently lie partlywithin saidframe and partly within removable cap pieces 8` and 8a.

.35 Through said passage continuous vtube `T is advanced in thedirection oflits arrow to the v cutting place, midway the length offrame4 and from 'thence ythe severed portions pass onward under cap piece 8aand are discharged. f

Fixed to vertical axial shaft 9 which, radially arrangedabout itsperiphery, area. plurality of cutting mechanisms which will presently bedescribed. `Symm-etrically arranged relatively to each cutter as 11,.best

is disc 10`Von Serial No. 591,828. n

shown in Fig. 5, are a series of shoes as 12, segmental 1n charactereach having 1n its periphery a groove 13 the cross section of which- 1sa half-circle adaptedto fit over tube T at the cutting point. Frame 4and llits caps are cut away at both sides to the axial line of tubepassage .7 at the cutting'point, `curves swung on one side from thecenter of shaft 9 of disc 10, and at the other sid-e at 17 from thecenter of pivot shaft 15. Said shoes, as 12,'when disc 10 is rotated,swing into one cutaway portion of Vframe 4 and groove 13'forms" asupport for the tube during the cutting 0peration.

In Vits preferred form, I also provide a movablev support 14 for thetube opposite to shoe 12, during the cutting operation. SaidY x'ed toits lower end arm 18 which projects tothe right, Figs. land 2, forengagement 'with each of a series of 'dogs as 19, fixed to the lowerface of disc 10 and corresponding in number withthe number of thecutting mechanisms. Arm 18 is providedV with a rearwardly extending horn20 whichV is normally spring urged against stop'21.

Cutter 11, preferablya thin sheet of steel, is removably held intheprojecting head 22 of cam lever 23 pivoted at 24.' -Thve lower end ofsaid lever 23 normally rides against circular track 25 and is urgedthereagainst by '.-70 shoe'12. Axialshaft 15 of tube support 14. yisverticaland parallel to shaft 9, andhas spring 26. Said track 25 isconcentric with 27. Shoe 12 has cut 30 therethrough 'mid-f '45 L Y vv 1. In a cutting mechanism of, the characway its length, and tubesupport 14 has cut 31 therein to permit free action of cutter 11 as thatcutter rises in action. v

Within frame 6 gea-r 29 is fixed to shaft 9 and said gear, shait andcutter disc 10 may be rotated from some known source of power and justas the cutter 11 reaches the cutting point, the lower end of'saidVlever' runs YoE rorns'aid trackand is spring forced'into the cavity intrack 25, between walls 27 and28.

This causes cutter 11 to rise swiftly to-engage andsever tube T betweenshoe 12` and tube support 14. At the'same time'dog 19 engages arm 18 andswings tube support 14: in Vanti'- clockwise direction in time withrotation Yof .disc 10,j thereby keepingcuts 30, 31 in register withleach other. [The continued rotation of; dise 10 promptly bringsfthelower VendA oflever 23 against wall 280i track 25 whereby said lever isrestored .to its position vof Fig. 1 andthe cutter is-withdrawn Shortlythereaiter'dog 19 passes from engagement with arm 18 of tube support letand said support snaps asinFig.1. 1 In the modification of Figs.` 1' and5 the movable tube support is omitted and. the back portion of frame 4aand its cap-V 86 are continuous thereby providinga back support forthetube. Y Also inthis -modication the Ashoes as 12 of disc 10 areomitted and the .cutters as 11joperate in the-.opentY The lower portionof trame 4a is cut away-at 32, from the cutting point onward, to provideroom p orthe retraction ofV thecutter as that cutter iscarried onward bydisc 10. The 'operation'.

of this modified form will be clearly-understood without furtherdescription.

, I claim:

4ter described the combinationof a rotating disc, a frame for supportingand. dlrectmg the. tube, a cutter carried by said disci and vmounted,for movement Vacross the path of the tube. to be cut, means foradvancing said cutter and means fo-rretracting said cutter. 2.; In 'arcutting mechanism oi the character described the combination ofv arotating disc, a spring urged leverpivotedfor radial movement thereon, acutter in the upper end of said lever, aframe for sup-porting anddirecting the 'tube and a iiXed, circular track adapted to be engaged bythe lower end ofVY said lever, said track being cut away at one Vpointto admit the lower end of said-lever whereby the upper end of said leveris urged upward against the tube in said frame.`

8. In a cutting mechanism of the character described the combination oia; Jrame yfor back into itsV position of rest cutter and-said shoehaving a peripheral groove tosupport the tube to .be cut.

`fla-Ina cutting mechanism of the: characterr described the combinationof a tube supporting and directing frame, a rotating disc, a cutterYcarried by said disc; and mounted for movement across' the path of thetube to be cut, means for advancing said'l cutter,

meansfor retracting said cutter, a segmental shoe 'carried by-saiddisc,.said shoe having a passage midway. .its length for said cutter,`

said shoehaviiig a peripheral groove to'support the tube nto be cut, anoscillatable tube support behind the `pathof the tube in said frame,a-'peripheral groove in said tube support, means carried bysaid disc formoving said support 'in registerwith the movement of the cutter leve-rand spring means for moving said support inthe opposite direction.

v '5. In, a cutting mechanismv of the characi ter described thecombination of a rotating disc,- al plurality of levers evenly spaced onsaid disc, pivoted for radial movementthereon,a cutter' in ,the upper'end of. eachjlev'er, means for advancing and means for retract- Vingsaid cutters, a segmental shoe' adjacent each lever on said disc, saidshoes. each having a passage midway itsf length for a cutterand reach"of said shoes 'having a peripheral groove to support the `tube to bevcut.

6. In a cutting mechanism of thev characterdeseribed the combination ofa rotating disc, a spring urged lever, a cutter in the upper `end of.said lever, a vframe for supporting and directingthe tube',.a,xedcirculartrack adapted to engaged by the lower end of said leve-r, saidtrack being out away at one pointto admit the lower end of said lever 5whereby theupper end ofv said lever is urged upward against the tube-fin said frame and a segmentedfshoe carried by said disc, said'shoehaving' a passage midway itsI length for said cutter, said vshoehaving a peripheral groove to support the vtube to be cut; Y 7; In acutting mechanism of the charac- -ter described the combination of a'rotating discfav spring urged lever pivoted for radial movement thereon,a cutter in the upper end ot Vsaid lever,`.a frame for supporting andYdirecting the tube,v Va fixed Vcircular' track adaptedto be engagedbythe lower end of said lever, said track being .out away at one pointvto admit theplower end of said lever whereby the upper end of saidlever is urged upward against the tube in said frame, a segmental shoecarried by said disc, said shoe having a passage midway its length forsaid "eutter, said/shoe having aY peripheral groove to support the tubeto be cut, an oscillatable tube support behind the path of the tube insaid frame, a peripheralrgroove in said tube sup-port and means carriedby said disc for moving said support in register with the movement ofthe cutter lever, spring means for moving said support iu the Oppositedirection.

In Witness whereof, I hereby aix my signature, this 4th day of February,1932.

CHARLES F. SMITH.

